Pump for hydraulic drives



June 25, 1935. T. J. scHLUETER PUMP FOR HYDRAULIC DRI-:VES

Filed March 23, 1933 2 Sheets-Sheet l Y TToRNEYs.

Jur-1e 2.05, *1935. I T. J. SCHLUETER 2,006,280

PUMP FOR HYDRAULIC DRIVES `Filed March 23, 1933 2 Sl'leelzs-Sheet4 2 y l, R/l/f/V o Patented June 2.5, 1935 i l UNITED 'STATES PATENT OFFICE PUMP FOR HYDRAULIC DRIVES Theodore J. Schlueter, New Orleans, La.

Application March 23, 1933, Serial No. 662,402

1 claim. (ci. 10s-12o) This invention has relation to a hydraulic shown at 4. The valve casing is located in the dlrive for automobiles and it consists in the vicinity of the pump 4 and pipes 'l connect the novel features hereinafter described and claimed. valve casing 5 With meters 6 Whiehal'e located An object-of the invention is to provide a hyat the ends of the' axles and at theinnersides 5. draulic drive as stated which may be used for of the wheels 2. The pipes 1 also connect the 54- propelling. the automobile in a. forward direction valve casing 5 with the pump 4. at a desired rate of speed and by reversing the The Dump 4 includes a Casing I8 With a T0750!" controlling means the automobile machine may I9 .iournalled therein. A shaft 20 is journalled be propelled in a rearward direction at a desired in'the side of the casing I8 and carries a collar 10.? rate of speed. The propulsion in either direction 2l. One end of the lever 22 (shown in dotted 10V',

at the desired speed is accomplished without uslines in Figure 4) engages .betwen the 4iianges ing shifting gears and the parts and features are of the collar 2| and when the lever 22 is swung so arranged and assembled that the device may the shaft 2l! is shifted longitudinally. One end be used as a brake for checking or stopping the of the shaft 20 is provided with gear teethv 23 l propulsion of the machine.

With the foregoing objects in view the desaid shaft'20 is adapted to move transversely vice includes a pump having means to be conacross channels. provided inthe rotor I3. The nected with the shaft of the engine and which channels 24 are radially disposed within the rotor is used for moving a column of liquid through' I9 as best shown in A@Figure 10. Blades 25 are which mesh with gear wheels (not shown) .l The 1I pipes to motors which are mounted upon the carried by the rotor I9 and are slidabIein re- 20 axles and at the hubs of the supporting wheels cesses 21 provided in the said rotor. springs 26 of the automobile machine. Avalve is connected are interposed between the inner edges of the t0 the SeresOf pipes and is provided With e- Plug blades and the bottoms of the recesses 2'1 and haVng DasSageWays adapted 'G0 register Wim normally hold'the outer edges of the blades in I 25 Sections 0f the pipes s0 that the Column 0f liquid contact with the inner peripheral surface of the 25 may be caused to flow in either of two directions pump casing la, The casing I8 is provided at through the pipes thus providing means for opone edge with a chamber 28 and at its opposite @ahime the rotors 0f the motors in either 0f tWO- edge with a wan 29. s The wall 29 is located be- 30 dlrectlons namely forward or backward' The tween the ends of the pipes 'l which connect with valve may also be manipulated to cause the colthe pump casing .s as shown in Figure 10 of the 30 umn of liquid to serve as a brake for the motors drawings and thltls eliminate the usual form of brake The casing I8 is provided at one side with a flngllfrislmlgggguepg; elclhwhxchls hood 30 andthe-rotor I9 is provided with'a wall l tplfllingt powi 1s aplllled t0 all 0f the Wheels of 33 provided upon the shaft 20 -Thus as the shaft e au omo 1 e mac ne. The mem e my from .zdrziztraztalriservare 40 ggnoalwd disggggidwilewdrgihg: shaft 20 and engages the hood 30 thus preventing 4o leakage at the point where the shaft; 20 passes iilprlinwrlliigclaind formmg part of uns specm through the wall of thehood. The Ashaft 20 cara of drive detached. Figure 2 is a perspective view of a valve memand close the passageways for the liquid there' `Mi ber used inthe drive'and Adetached ltherenrom. throughv Figure 3 is a transverse sectional view through AS stated the teeth 32. are edepted `t0 leek' the pump of the hydraulic drive, the disc to the wall of,- the cavity when the 'Figure -4'is a sectional view ofthe pump cut Passageisclosed, by the teeth entering the grooves on the line 4-4 of Figure 3. l 33 that are provided on the shaft 20; it being 50 vFigure 5 is a detailed sectional view of the manifest that the Seid sha1-'illes eee-Helling Opelpump cut on the line 5'5 of Figure 3.` ation vand moves in unison withthe wall and disc Similar numerals of reference'designate correduringrthe said locking OperatlOn. The lllrlloeksponding parts in all theviews'of the drawings. ing or reverse operation takes place when the 'A pump for impelling a column of liquid' is cavity passage is .fully open because the teeth 56 32 are released from the groove 33 andvthus release their grip and permit the disc in turn to be released from the said wall.

Branch pipes 4|! and 40a connect one side of the casing with the pipes 1 and branch pipes 4| and 4|`a connect the opposite side of the casing 5 with the pipes 1. Valve casing 5 is provided with an end wall 42 and a valve member or plug 43 is turnably mounted in the casing 5. The valve member 43 is provided with end passages 44 which are adapted to be brought into register with the ends of the pipes 1 and the valve member is provided with cross-passages 45 adapted to be brought into register with the ends of the branch pipes 40, 40a and 4|, 4 la when the valve member is turned and as indicated by dotted lines in Figures 4, 5 and 6 of the drawings. The valve member 43 is provided with a squareend 46 to which a lever (not shown) may be applied for turning the valve member.

'Ihe pipes 'I and the casings of the generator and the motors are iilled with liquid, as for instance, oil. When the rotor I9 in the casing 4 isrotated the liquid is forcedA by the blades 25 through the casing Il and" through the pipes 1. I'he liquid passes through the valve casing 5 to the motors 6 and thus the rotors 3 are rotated and the drive is transmitted to the wheels 2. By shifting the shaft 20 the head 34 may uncover the inner ends of the channels 24 and thus the liquid may pass through the rotor i 9 and the iiow of the -liquid to the motors may be interrupted or reduced so` that the engine may continue to operate without forcing the column of liquid to the motor or the motor may be operated -at a reduced rate" of speed by moving the head so that it will partially close the inner ends of vthe channels.

Thus it will be seen that a hydraulic drive is provided which can be used for propelling an automobile machine in a forward direction at a desired rate of speed and which may be manipulated to bring the machine to a state of rest without stopping the operation of the engine and also may be manipulated to move the automobile machine in a rearward direction at a desired rate of speed.

I claim: A hydraulic drive comprising a, casing having inlets and outlet ports communicating with the interior thereof, means for forcing liquids through the ports and casing, means for reversing the flow of the liquid through the ports and casing, said casing having a hood at the center of its side wall, a disk slidable in the hood and adapted to enter the casing, a rotorjournalled in the casing and having spring supported peripheral vanes engaging the inner surface of the casing, said rotor having at its side, a central cavity adapted to'receive said disk snugly and ntting in said hood, said rotor, having radial disposed passages located between said vanes and communicating at their inner ends with said cavity -ing further adapted for unlocking the disk from the wall of the cavity when the disk is moved to a position where the inner ends of the passages are opened.

THEODORE J. SCHLUETERL 

